Class 9 Science: Sample Question Paper Term I- 6 (With Solutions) | Science Class 9 PDF Download

Class - IX
Time: 90

Max. Marks: 40

General Instructions:

1. The Question Paper contains three sections.
2. Section - A has 24 questions. Attempt any 20 questions.
3. Section - B has 24 questions. Attempt any 20 questions.
4. Section - C has 12 questions. Attempt any 10 questions.
5. All questions carry equal marks.
6. There is NO negative marking.

Q.1: Two miscible liquids A and B are present in solution. The boiling point of A is 60°C and that of B is 90°C. Which of the following method is used to separate these two liquids?
(a) Fractional distillation
(b) Chromatography
(c) Decantation
(d) Filtration

Correct Answer is Option (a)
Two miscible liquids are separated by distillation process in which if the difference in boiling point temperature is more than 25°C or K then the simple distillation is applied and if the difference is less than 25°C or K then we use fractional distillation. Since there is a difference in boiling point temperature is 30°C so, we should use a simple distillation process.

Q.2: Match the following with the correct response:

(a) (A) - (i), (B) - (iii),(C) - (ii), (D) - (iv)
(b) (A) - (ii), (B - (iv),(C) - (i), (D) - (iii)
(c) (A) - (iii), (B) - (ii),(C) - (iv), (D) - (i)
(d) (A) - (iv), (B) - (i),(C) - (iii), (D) - (ii)

Correct Answer is Option (b)
i. The SI unit of velocity is meter per second (m/s).
ii. The SI unit of displacement is the meter (m).
iii. The SI unit of acceleration is the metre per second squared (m/s²).
iv. The SI unit of time is the second (s).

Q.3: On a 3 kg mass, 5 newton of force acts for 0.1 second. The impulse imparted to the mass is (in kg m/s): 
(a) 0.16 
(b) 1.0
(c) 1.5 
(d) 0.5

Correct Answer is Option (d)

Impulse can also be expressed as the rate of change of momentum.

And Momentum = force x time = 5 x 0.1
= 0.5 kg m/s

Q.4: The function of Endoplasmic Reticulum is/are:
A. Synthesis of proteins
B. Transfer of hereditary characters
C. Synthesis of lipids
D. Processing and packaging
(a) A and C
(b) A, B and D
(c) All of these
(d) A, C and D

Correct Answer is Option (a)
There are two types of Endoplasmic Reticulum (ER). The Rough Endoplasmic Reticulum (RER) has ribosomes attached to its surface. Ribosomes are the sites of protein manufacture. The smooth endoplasmic reticulum (SER) helps in the manufacture of fat molecules or lipids. Some of these proteins and lipids help in building the cell membrane (known as membrane biogenesis). The Endoplasmic Reticulum also serves other general functions including the folding of protein molecules in sacs called cisternae and the transport of synthesized proteins in vesicles to the Golgi apparatus.

Q.5: Match the following with the correct response

(a) (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii)
(b) (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)
(c) (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
(d) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)

Correct Answer is Option (a)

• Parenchyma is a thing that stores food in plants.
• Phloem conduct prepared food in plants.
• The stomach is an organ.
• The heart is a muscular tissue.
  

Q.6: The process of evaporation is fast when the mixture is:
(a) heated but covered
(b) heated but not covered
(c) covered but not heated
(d) neither heated nor covered

Correct Answer is Option (b)
Evaporation is a type of vaporization, that occurs on the surface of a liquid as it changes into the gaseous phase. When heating is done and the mixture is not covered at that time evaporation is fast.

Q.7: From the given v-t graph, it can be inferred that the object is:

(a) in non-uniform motion
(b) at rest
(c) Non of these 
(d) in uniform motion

Correct Answer is Option (d)
From the given v-t graph, it is clear that the velocity of the object is not changing with time i.e., the object is in uniform motion.

Q.8: When a force is exerted on an object, it can change its:
A. State
B. Position
C. Shape
D. Direction
(a) (A) and (B) are correct
(b) (A), (B) and (C) are correct
(c) (B) and (C) are correct 
(d) All of these

Correct Answer is Option (d)
The force causes a change in the state of rest, motion, direction, position, or even the shape of a body.

Q.9: Which of the following are covered by a single membrane? 
(a) Mitochondria 
(b) Vacuole 
(c) Nucleus
(d) Plastid

Correct Answer is Option (b)
Vacuole is a cavity within the cytoplasm of a cell, surrounded by a single membrane and containing fluid, food, or metabolic waste. Mitochondria, Nucleus and Plastids are surrounded by double membrane.

Q.10: The only cell organelle seen in prokaryotic cell is
(a) ribosomes
(b) mitochondria 
(c) lysosomes
(d) plastids

Correct Answer is Option (a)
Unlike eukaryotic cell, a prokaryotic cell lacks membrane-bound organelles like plastids, mitochondria and endoplasmic reticulum but smaller and randomly scattered ribosomes are seen.

Q.11: An element Y is not lustrous, sonorous, or malleable. Identify Y.
(a) Gold
(b) Aluminum
(c) Copper
(d) Bromine

Correct Answer is Option (d)
Non-metals are not lustrous, sonorous, or malleable. Since bromine is a non-metal so ‘T is bromine.

Q.12: The third equation of motion is:
(a) v² = u² + 2aS
(b) u² = v² + 2aS
(c)
(d)

Correct Answer is Option (a)

The third equation of motion draws a relation between final velocity, initial velocity, acceleration of the body, and its displacement.
The third equation of motion is v² = u² + 2aS
Here, v = final velocity, u = initial velocity, a = acceleration and S = displacement.

Q.13: Weight of a body due to the Earth acts:
(a) vertically upwards
(b) towards the centre of the earth
(c) in any direction
(d) horizontal

Correct Answer is Option (b)
The weight of the body is the measure of force by which the object is attracted to the center of the earth. It always acts vertically downwards.

Q.14: Match the following with the correct response:

(a) (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)
(b) (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii)
(c) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)
(d) (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)

Correct Answer is Option (c)

• Lysosomes are popularly known as 'suicidal bags'. They contain enzymes for the hydrolysis of all cell components in case of damage. They play a role in cell death, 
• Centrioles are a very important part of centrosomes or spindle pole bodies that act as the microtubule-organizing centers in animal cells. 
• Golgi apparatus consists of a system of membrane-bound vesicles. The proteins manufactured by the ribosomes are packed inside the vesicles. 
• Smooth endoplasmic reticulum (SER) helps in the manufacture of fat molecules or lipids. Some of these lipids help in building the cell membrane (known as membrane biogenesis).
  

Q.15: Which of these components of blood fight infection?
(a) RBC
(b) WBC
(c) Platelets
(d) Serum

Correct Answer is Option (b)
WBC, also called leucocyte are involved in the protection of the body against infectious diseases and foreign invaders.

Q.16: Move magnet over
(i) mixture of iron filings and sulphur
(ii) over FeS and choose the correct observation
(a) Iron filings are attracted towards the magnet, FeS is not
(b) Both (i) and (ii) are not attracted by a magnet
(c) Iron filings and FeS both are attracted by a magnet
(d) FeS is attracted by magnet whereas iron does not

Correct Answer is Option (a)

Move magnet over a mixture of iron filings and sulphur Iron filings are attracted to the magnet but sulfur is not. This proves that the mixture is not yet a compound, and is a mixture, as it can be separated by physical means.
Compound FeS is not attracted by a magnet.

Q.17: The plasma membrane is called semi-permeable:
A. It allows the entry of selective substance.
B. It does not allow entry of any substance.
C. It allows the exit of selective substances.
D. It allows entry only.
(a) All of these
(b) B and C
(c) C and D
(d) A and C

Correct Answer is Option (d)
The plasma membrane is called semi-permeable because it is selectively permeable and regulates the entry and exit of substances. It allows entry of selective substances into the cell and allows exit of selective substances from the cell.

Q.18: Ligaments and Tendons are formed of
(a) Epithelial tissue
(b) Cartilage
(c) Muscular tissue
(d) Connective tissue

Correct Answer is Option (d)
Two bones can be connected to each other by another type of connective tissue called the ligament. Tendons connect bones to muscles and are another type of connective tissue.

Q.19: Which of the following gives both direction and magnitude?
(a) Unit Scalar
(b) Scalar
(c) Unit Vector
(d) Vector

Correct Answer is Option (d)
Any quantity that needs to be fully described by identifying its magnitude and direction is referred to as a vector quantity. By magnitude, we mean the size of the quantity, such as length or strength. By direction, we mean where the vector is pointing or where it is being directed, such as left or right, north, south, east, or west, or even up or down.

Q.20: A man is at rest in the middle of the pond on perfectly smooth ice. He can get himself to the shore by making use of Newton's:
(a) Third law of motion
(b) Fourth
(c) First
(d) Second

Correct Answer is Option (a)
By using Newton’s third law of motion, he can get himself to shore. When the person pushes forward, the reaction force offered by the ice is very little. But, this reaction force will help him to move forward. Hence, Newton's Third Law will help him to reach the shore.

Q.21: Match the pair:

(a) 1 (C), 2 (A), 3 (D), 4 (B), 5 (E)
(b) 1 (A), 2 (D), 3 (C), 4 (E), 5 (B)
(c) 1 (D), 2 (B), 3 (A), 4 (E), 5 (C)
(d) 1 (B), 2 (E), 3 (D), 4 (C), 5 (A)

Correct Answer is Option (d)

• The process of Evaporation is used to obtain drinking water from sea-water in many countries.
• In chemistry, a suspension is a heterogeneous mixture that contains solid particles sufficiently large for sedimentation. 
• Brass is an alloy made primarily of copper, usually with zinc.
• Cream is usually separated from milk by the centrifugation process. 
• A gel is neither a liquid or a solid, but a mixture contains both liquid and solid mixed together.

Q.22: Find the incorrect statement:
(a) Cell division takes place by fission or budding in the prokaryotic cells.
(b) Plant cells are smaller than animal cells.
(c) Cytosol acts as a store of vital chemicals such as amino acids, glucose, vitamins, ions, etc.
(d) Blue-green algae are also called cyanobacteria.

Correct Answer is Option (b)
Plant cells can be larger than animal cells. The size of an animal cell varies from 10 to 30 micrometers while that of a plant cell ranges from 10 to 100 micrometers.

Q.23: Which chemical is deposited on the cell wall of sclerenchyma?
(a) Pectin
(b) Cellulose
(c) All of these
(d) Lignin

Correct Answer is Option (d)
The chemical deposited on the wall of sclerenchyma is lignin. This deposition of lignin on the wall makes these tissues impervious to water and air.

Q.24: The displacement of the body can be
(a) Zero
(b) All of these
(c) Positive
(d) negative

Correct Answer is Option (b)
Displacement is the shortest distance travelled so it can be positive or negative or zero.

Q.25: Identify the incorrect statement.
A. The spring force always pushes a body.
B. The weight of a body always acts towards the centre of the Earth.
C. The tension of a string always pulls a body.
D. Frictional force always acts parallel to the surface of contact.
(a) (C) 
(b) (D)
(c) (B) 
(d) (A)

Correct Answer is Option (d)
The spring force is the force exerted by a compressed or stretched spring upon any object that is attached to it. An object that compresses or stretches a spring is always acted upon by a force that restores the object to its rest or equilibrium position. So, the spring force does not always push a body.

26. A car travels 100 km east and then 100 km south. Finally, it comes back to the starting point by the southeast route. Throughout the journey, the speed is constant at 60 km h^-1. The average velocity for the whole journey if the time taken is 3.3 hours is
(a) 90 kmh^-1 
(b) 60 kmh^-1 
(c) 180 kmh^-1 
(d) 0 kmh^-1 

Correct Answer is Option (d)
We know that,

Now, Displacement = Final Position - Initial position
Since the car comes back to its starting point, so, displacement = 0

So, the average velocity for the entire trip would be zero, because its final position and initial position are identical.

27. Statement A: The secreted proteins are packed inside the secretory vesicles which are pinched off from the Golgi apparatus.
Statement B: ER is absent in the red blood cells of mammals.
Which of the two statement(s) is/are true? 
(a) Neither statement A nor statement B
(b) Statement B
(c) Both the statements - A and B
(d) Statement A

Correct Answer is Option (c)
Both statements are correct. Golgi apparatus consists of a system of membrane-bound vesicles. The proteins manufactured by the ribosomes are packed inside the vesicles. Endoplasmic Reticulum (ER) is absent in the red blood cells of mammals. Red Blood Cells in mammals anucleate when mature i.e. they do not contain a nucleus. This is so that the cell has maximum space for haemoglobin.

28. A student used a red stain for mounting a peel of onion. This corresponds to the stain:
(a) Methylene
(b) Safranin
(c) Acetocarmine
(d) Iodine

Correct Answer is Option (b)
A student used a red stain for mounting a peel of onion This corresponds to the stain Safranin. 
i. It is used in histology and cytology.
ii. The formula of Safranin is C₂₀H₁₉N⁴⁺Cl^- 
iii. The molar mass of Safranin is 350.85 g·mol^-1 

iv. It is soluble in water.

29. Engulfing of food materials or foreign bodies by cells like Amoeba is called:
(a) plasmolysis
(b) diffusion
(c) osmosis
(d) endocytosis

Correct Answer is Option (d)
The cell membranes flexibility allows the cell engulf in food and other material from its external environment. This process is known as endocytosis.

30. Which of the following is the case of accelerated motion?
(a) The motion of the athletes in a straight line.
(b) Body moving with constant velocity
(c) Both uniform circular motion and motion of the athletes in a straight line.
(d) Uniform circular motion

Correct Answer is Option (c)

The motion of the athletes in a straight line and uniform circular motion both are the case of accelerated motion. The speed of the athletes goes on increasing.

The velocity of a body in uniform circular motion changes due to continuous change in direction, therefore, the motion along a circular path is said to be accelerated.

31. Assertion (A): The interconversion of state occurs without a change in composition but there is a change in the chemical nature of the substance.
Reason (R): During burning one substance reacts with another to undergo a chemical composition.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Correct Answer is Option (d)
The interconversion of states is a physical change because these changes occur without a change in composition and no change in the chemical nature of the substance. Although ice, water, and water vapour all look different and display different physical properties, they are chemically the same.

32. Assertion (A): The outer membrane of mitochondria is folded into cristae.
Reason (R): Cristae increases the surface area.
(a) Both A and R are true and R is the correct explanation of A. 
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true and R is false.
(d) A is false and R is true.

Correct Answer is Option (d)
The inner membrane is folded to form finger-like projections called cristae.

33. Assertion (A): Meristematic tissues are growth tissues and found in the growing regions of the plant.
Reason (R): According to the position of meristematic tissues they are of three types.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false. 
(d) A is false but R is true.

Correct Answer is Option (a)
Meristematic tissues are growth tissues and found in the growing regions of the plant. According to their position in plant, meristems are apical, lateral, and intercalary. 

i. Apical meristem - Apical meristem is present at the growing tips of stems and roots and increases the length of the stem and the root.
ii. Lateral meristem - Lateral meristems are found beneath the bark. The girth of the stem or root increases due to lateral meristem (cambium).
iii. Intercalary meristem - Intercalary meristem is the meristem at the base of the leaves or internodes (on either side of the node) on twigs. It increases the length of the organs such as leaves and internodes.

34. Assertion (A): The speedometer of an automobile measure the average speed of the automobile.
Reason (R): Average velocity is equal to total displacement per total time-taken.
(a) Both A and R are true and R is the correct explanation of A. 
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Correct Answer is Option (d)
Speedometer measures instantaneous speed of automobile.

35. Assertion (A): If the resultant of all the forces acting on a body is zero, then the forces are called balanced forces.
Reason (R): The forces acting on a stationary box is an example of balanced forces,
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A. 
(c) A is true but R is false.
(d) A is false but R is true.

Correct Answer is Option (b)
If the resultant of all the forces acting on a body is zero, then the forces are called balanced forces. Suppose a heavy box is lying on the ground. Let us push this box with our hands but it does not move. Though the box is at rest, four forces are acting on it - the force of the push, the force of friction, the force of gravity, and force of reaction. The forces acting on a stationary box is an example of balanced forces. Thus balanced forces cannot produce motion in a stationary body or stop a moving body.

36. In a water-sugar solution:-
(a) none of these
(b) water is solute and water is also solute 
(c) water is solute and sugar is solvent
(d) water is solvent and sugar is solute

Correct Answer is Option (d)
As water is in large amount, it is solvent and sugar is in less amount hence it is solute.

37. A body is thrown vertically upwards with velocity u, the greatest height h to which it will rise is
(a) u/2g
(b) u²/2g
(c) u²/g
(d) u/g

Correct Answer is Option (b)
If a body is thrown vertically upwards with initial velocity "u"
Maximum Height of body = u²/2g
As 2gh = v2 - u2
At maximum height final velocity of body is zero.
⇒ v = 0
So, 2gh = v² - u² 
2gh = -u² 

Distance can't be negative so, h = u²/2g

38. The largest cell in the human body is: 
(a) Nerve Cell
(b) Kidney cell
(c) Muscle cell
(d) Liver cell

Correct Answer is Option (a)
The largest cell in the human body is the nerve cell. A nerve cell forms the functional unit of the nervous system in animals for control and coordination.

39. Which types of ribosomes are found in eukaryotes?
(a) 70S
(b) 60S
(c) 80S
(d) 100S

Correct Answer is Option (c)
Eukaryotic cells contain 80S ribosomes, which are further divided into two unequal subunits designated small subunit (40S) and large subunit (60S) according to their sedimentation coefficients.

40. A student identified the following figure as stripped muscles because of:

(a) has no striations and is uninucleated
(b) light and dark striations and is uninucleated
(c) has no striations and is multinucleated
(d) light and dark striations and is multinucleated

Correct Answer is Option (d)

Striated muscle cells are cylindrical, elongated and enclosed in a membrane called sarcolemma.
Striated muscles cells are multinucleated.
Striated muscles show presence of light and dark bands which gives it striped appearance.

41. The site of detoxification in liver cells is:
(a) SER
(b) lysosome 
(c) ribosome
(d) RER

Correct Answer is Option (a)
SER i.e. the smooth endoplasmic reticulum lacks ribosomes and functions in lipid manufacture and metabolism, the production of steroid hormones, and detoxification.

42. The centriole is associated with: 
(a) Reproduction
(b) Spindle formation
(c) Respiration
(d) DNA synthesis

Correct Answer is Option (b)
Centrioles are a very important part of centrosomes. Centrosomes or spindle pole bodies act as the microtubule organizing centers in animal cells. During cell division in animal cells, spindle formation takes place from the centriole. The spindle help in the movement of chromatids towards the opposite poles.

43. Find the incorrect statement
(a) The body is said to be accelerating if it moves in a uniform circular motion
(b) None of these.
(c) The slope of velocity-time graph gives instantaneous acceleration 
(d) When a body moves with constant speed its acceleration is zero

Correct Answer is Option (d)

If a body with constant speed is travelling in the same direction(i.e. it is not changing its direction) then its velocity is constant and so its acceleration will be zero. But if the object is changing its direction then its velocity is also changing and so it possesses the acceleration.
Hence, the given statement is incorrect.

44. A science teacher soaked arhar dal in water for few hours and put 2 ml of solution each into 4 test tubes and asked 4 students to test it for the presence of adulterant metanil yellow. Student A put water into it, student B put HC1 into it, student C put NaOH into it and student D put alcohol into it. The student who gets the correct result is:
(a) Student D 
(b) Student A
(c) Student B
(d) Student C

Correct Answer is Option (c)

Student B put HCl into it to get a correct result because the presence of metal yellow can be tested in dal by adding a few drops of hydrochloric acid to test sample. If the test solution turns pink in colour, it indicates the presence of metanil yellow.

Metanil yellow + HCl → Pink colour

45. Which of the following is a homogenous mixture? 
(a) Oil and water
(b) Sugar and water
(c) Sodium chloride and iron filings 
(d) Salt and sulphur

Correct Answer is Option (b)
Sugar and water (sugar solution) is a homogenous mixture because sugar and water are completely mixed together and have a uniform composition throughout.

46. Cell theory was given by
(a) Haeckel 
(b) Virchow
(c) Hooke 
(d) Schleiden and Schwann

Correct Answer is Option (d)
Cell theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann.

47. The cells enclosing the stoma are called______cells. 
(a) cambial
(b) guard 
(c) subsidiary
(d) epidermal

Correct Answer is Option (b)
Each stoma is bounded by a pair of specialized epidermal cells or two kidney-shaped cells called guard cells. The concave sides of these guard cells face each other and have a space forming the stomatal opening. A stoma is composed of two guard cells that regulate the opening and closing of the stoma.

48. What is the function of White Blood Corpuscles: 
(a) Protection of body against diseases 
(b) Clotting of blood 
(c) Transport of oxygen
(d) Transport of carbon dioxide

Correct Answer is Option (a)
WBC protects the body against diseases because they produce antibodies that help in fighting against invaders.

Read the text carefully and answer the questions:
An element as a basic form of matter that cannot be broken down into simpler substances by chemical reactions. Elements can be normally divided into metals, non-metals and metalloids. Examples of metals are gold, silver, copper etc. Examples of non-metals are hydrogen, oxygen, iodine etc. Some elements have intermediate properties between those of metals and non-metals, they are called metalloids. A compound is a substance composed of two or more elements, chemically combined with one another in a fixed proportion. The material obtained by the group I is a mixture of the two substances. The properties of the mixture are the same as that of its constituents.
Q.49: ______ is the only metal that is liquid at room temperature.
(a) silver
(b) gold
(c) copper 
(d) mercury

Correct Answer is Option (d)

Q.50: The colourless gas with the smell of rotten egg is found in
(a) group II
(b) group IV
(c) group III
(d) group I

Correct Answer is Option (a)

Q.51: The constituent of compounds are separated by
(a) both chemical reaction and electrochemical reaction
(b) electrochemical reaction 
(c) none of these
(d) chemical reaction

Correct Answer is Option (a)

Q.52: Who was the first scientist to use the term elements?
(a) Antoine Laurent 
(b) Robert Boyle
(c) Robert Brown
(d) none of these

Correct Answer is Option (b)

Read the text carefully and answer the questions:
The plasma membrane is the outermost covering of the cell that separates the contents of the cell from its external environment. The plasma membrane allows or permits the entry and exit of some materials in and out of the cell through osmosis and diffusion. Osmosis is the passage of water from a region of high water concentration through a selectively permeable membrane to a region of low water concentration till equilibrium is reached. If the medium has exactly the same water concentration as the cell, there will be no net movement of water across the cell membrane. Osmosis is a special case of diffusion through a selectively permeable membrane. Diffusion is important in the exchange of gases and water in the life of a cell. In addition to this, the cell also obtains nutrition from its environment.
Q.53: In diffusion, there is a spontaneous movement of a substance from a region of ______ concentration to a region where its concentration is ______.
(a) low, low 
(b) high, low
(c) low, high
(d) high, high

Correct Answer is Option (b)

Q.54: The plasma membrane is flexible and is made up of
I. protein
II. lipids
III. fat
IV. carbohydrates
(a) (IV) and (I)
(b) (II) and (III)
(c) (I) and (II)
(d) (Ill) and (IV)

Correct Answer is Option (c)

Q.55: Unicellular freshwater organisms and most plant cells tend to gain water through
(a) osmosis
(b) absorption
(c) none of these
(d) diffusion

Correct Answer is Option (a)

Q.56: The cell will shrink in which of the following solution?
(a) none of these
(b) Hypertonic solution 
(c) isotonic solution
(d) Hypotonic solution

Correct Answer is Option (b)

Read the text carefully and answer the questions:
When an object moves in a circular path with uniform speed, its motion is called uniform circular motion. The direction of motion changed at every point moving along the circular path.

Q.57. Which one of the following is most likely not a case of uniform circular motion?
(a) The motion of hours’ hand on the dial of a clock.
(b) The motion of a racing car on a circular track.
(c) The motion of the earth around the sun.
(d) The motion of a toy train on a circular track.

Correct Answer is Option (b)

Q.58. The train is moving on a track(below image). Though the speed of a train is constant the direction of motion (or direction of speed) is changing continuously. So, the train is exhibiting:
(a) uniform motion
(b) uniform notion
(c) decelerated motion
(d) accelerated motion

Correct Answer is Option (d)

Q.59. A cyclist goes around a circular track once every 2 minutes. If the radius of the circular track is 105 metres, calculate his speed.
(a) 5.8 m/s
(b) 5.6 m/s
(c) 5.5 m/s
(d) 5.7 m/s

Correct Answer is Option (c)

Q.60. Which of the following statement is correct?
I. Motion of the moon and the earth is an example of non-uniform circular motion.
II. When the velocity of an object changes, we say that the object is accelerating.
III. A satellite in a straight orbit around the earth.
IV. the change in the velocity could be due to a change in its magnitude or the direction of the motion or both.
(a) (II) and (IV)
(b) (Ill) and (IV)
(c) (I) and (II)
(d) (II) and (III)

Correct Answer is Option (a)